catabolism is enzymatically controlled processes in which
substances are broken down to simpler substances
BMI=weight (lb) X 703/ Height (in2) (english)
BMI=weight (kg)/height (m2)
(1) weight kg=weight lb/2.2
height m= height inches/39.4
Nomogram is the ratio weight/height2 the tis read from a
centrals cale after a straight edge is place between height and body weight
skin fold calipers measure the
thickness of the subq fat layer at specific body sites. The measurements are then compared to norms for total body fat.
Central obesity is associated with
cardiovascular disease, diabetes 2, hypertension, stroke, demetia....
Determination of central obestiy
AHA says above 1.0 for men and above 0.8 for women is associated w/ central obesity (apple shape) below these numbers there is a reduced risk which is pair
how to measure waist to hip ratio
while standing, measure your waist at your navel- record in cm.
while standing measures hips at the greatest circumference and record this value in cm
divide the waist circumference by the hip circ to get the waist-hip ratio
waist measurement increased risks when
the waist measure of a male exceeds 40 inches (102 cm) and that of female exceeds 35 inches (88cm)
suppose two people have the same height and weight but person A has significantly high bioelectrical impedance than person B. How do the BMI and percentage of body fait compare in these 2 people? explain
a college student who gained unwanted weight wishes to lose 20 pounds before graduation ceremonies, 10 month away. By how many kilocalories per week would the student have to reduce intake or increase expenditures to lose the 20 pounds (lb= 3500kcal)
how many kilocalories per day would the student had ego lose over the 20 month periods. is this a practical weight loss program...
three characteristics of enzymes
it is not used up and does not change shape in a reaction, it speeds up a reactions, don't know another one
enzymes of the digestive system are classified as hydrolyses...which is what?
it is an enzyme that catalyzes the hydrolysis of a chemical bound
end product of digestion of these foods
protein-,carbs, fats-glycerol n fatty acids
amino acids, glucose, fat- glycerol and fatty acids
people on a strict diet to lose weight begin to metabolize stored fats at an accelerated rate. How does this condition affect blood ph.
decrease blood ph and makes it acidic
rapid, predictable, involuntary motor response to stimuli-mediated over nural pathways called reflex arc
five essential components of reflex arc
receptor, sensory neuron, intergration center, motor neuron, effector
what is importance of reflex testing
assessing the condition of the nervous system. distorted/exaggerrated may indicate degernation of portions of the nervous system
reflexes classified as somation
crossed extensor reflex, corneal, gag, patellar, plantar, abdominal, and achilles
can the stretch reflex be elicited in an animal where the brain has been destroyed
yes as along as the animal has been killed recently. if there is ATP left in the muscles cells for contractions and in the nerve cells to conduct action potentials the reflex is intact.
adaptation of sensory receptors
changing of a sensory receptor to better suit an organisms environment
why is it advantageous to have pain receptors that are sensitive to all vigorous stiumuli
why is nonadaptibility of pain receptors important
if ppl get adapt to pain they daily to recognize serious condition like heart attack...pain is only sensation that is also a symptom
why is it dangerous if you didn't have cutaneous organs
bc without them you could touch something w/out cowing your doing harm (burn
the eyeball is wrapped in adipose tissue...whats the function?
it's fat tissue and protects the eyeball and works as a cushion
why does one have to blow nose while crying
a percentage of tear is release into nasolacrimal duct then goes to nasal cavity. secretes fluids
would you expect the pupil to be dilated in what circumstances and constricted in when
dim light when observing distant objects
constricts in bright light when focusing for near vision
modification of the choroid that controls the shape of the crystalline lens and contains the cilary muscle
the near point increase with age because the ______ of the lens decreases as we get older
a convex lens like that of the eye produces an image that is upside down and reversed from left to right call
a real image
normal,presently unavoidable degeneration of the accommodation power of the eye assoc w/ aging
to which wavelengths of light do the three cones tips of the retina respond maximally
blue pigments (430mm), green pigments (530mm), red pigments (560 mm)
why do we see a great range of colors but only 3 cones exist?
interpretation of the intermediate colors of the visible light spectrum is a result of overlapping input from more than one cone type
difference between binocular and panoramic vision
binocular vision there is a considerable overlap between the visual fields of the left and right eye. panoramic vision the left and right eyes see in two different directions resulting in a panoramic field of view
describe how sound of different frequency of pitches are differentiated in the cochlea
the cochlea is a conical organ wrapped on itself to form a spiral. any vibration that travels through it will move until it reaches a pt where the dimension of the cochlea is related to the frequency, then it will resonate and stimulate sensory cells that are located there